Plowcolter



April 22 1924. k ,398

J. HEIKKILA PLOWCOLTER Filed Sept. 25 1922 ELMO M UNITED STATES PATENTOFFICE,

JONAS EEIKKILA, OF CROMWELL- MINNESOTA.

IPLOWCOLTEB.

Application filed September 25, 1922. Serial No. 590,511.

To all whom it may concern:

Be it known that I, JONAS HEIKKILA, a citizen of the United States,residing at Cromwell, in the county of Carlton and State of Minnesota,have invented certain new and useful Improvements in Plowcolters, ofwhich the following is a specification, reference being had therein tothe accompanying drawing.

This invention relates to plow colters and the princi a1. object is toproduce a novel 'form of co ter and brace therefor, the colter beingpivotally mounted upon the beam of the low in such a manner that it maybe extending considerable I shank 7, as at 8, and extending tosubstanquic ly swung out of action when des red.

Other objects and advantages of the invention will appear in the furtherdescription thereof.

Referring to the accompanying drawing forming part of this applicationin which like reference characters indicate like parts:

Figure 1 is a perspective View of one of the improved colters and braceillustra tivg of the relative position on a plow beam, an

Figure 2 is a perspective viewof a clip or additional support for thecolter cradle, when such is desired.

The element designated 1 represents the beam of a plow and 2 a cradle inwhich the colter 3 is pivotally mounted, as by a suitable bolt- 4fastened through the two out wardly projecting terminals 5 of thecradle. The latter is bolted to the beam of the low diagonally u on theside thereof, one o the bolts being 5 own in the uppermost corner 1 inthe base of the cradle and illustrated at 6, while the other bolt is notshown but occurs directly beneath the bolt 6 in thelower corner of thecradle.

The colter 3 is preferably of somewhat wedge shape, that is to saygreater in depth below the pivotal tially a point at the extreme endthereof, as at 9, the cutting edge being preferably convexed arcuatelyin form and sharpened in scallop like serrations as indicated at 10.

The principal object of the colter being pivotally united, as beforestated, is that it may be quickly thrown about sideways and pivotally,and extend upwardly in the exact opposite direction to that shown in thedrawing when it is not desired to use same in cutting sod, roots, or thelike in front of the plow.

As a reinforcement or brace for the colter I have shown a convenientform of such at 11, the same being a substantially tri-angular shapedbracket, the two free ends 12 of which are bent upwardly and bolted withthrough bolts to the beam of the plow.

When the colter and brace are attached to a steel beam plow, it isapparent that no reinforcement or cli is necessary but when attached toa woo en plow it may be convenient to have provided a metalreinforcement as illustrated at 14, which may be made to surround thebeam of the plow, or in the event of the plow having a double beam asfor instance in the larger type of tractor plows, this brace may extendintermediate I of the beams and be securely bolted thereto. 4

Having thus described my invention, what pending knife like colterpivotally mounted within said cradle whereby when not in use the coltermay be swung laterally in the cradle and vertically out of engagementwith, the soil being traversed, and a triangularly shaped brace at therear of said colter fastened to the beam of the plow and engagmg same. Iv

In testimony whereofl hereunto affix my signature in the presence of twowitnesses.

JONAS HEIKKILA. Witnesses:

JOHN E. HEIKKILA, Wrmnau. O. HEIMANEN.

